38818121 has 8 divisors (see below), whose sum is σ = 41812320. Its totient is φ = 35919072.

The previous prime is 38818097. The next prime is 38818127. The reversal of 38818121 is 12181883.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38818121 - 2¹⁸ = 38555977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38818127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22940 + ... + 24573.

It is an arithmetic number, because the mean of its divisors is an integer number (5226540).

Almost surely, 2^38818121 is an apocalyptic number.

It is an amenable number.

38818121 is a deficient number, since it is larger than the sum of its proper divisors (2994199).

38818121 is a wasteful number, since it uses less digits than its factorization.

38818121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47575.

The product of its digits is 3072, while the sum is 32.

The square root of 38818121 is about 6230.4190067764. The cubic root of 38818121 is about 338.5931516079.

The spelling of 38818121 in words is "thirty-eight million, eight hundred eighteen thousand, one hundred twenty-one".